Study for Development of Elastomeric Thermal Shield Materials.

摘要

Work was performed to (a) define, evaluate, and demonstrate new concepts for an easier and more reliable manufacturing process for silicone elastomeric thermal shields, while maintaining high ablation performance and resistance to the general space environment, and (b) define problems and conduct preliminary investigations of materials and methods leading to the development of shape stable elastomers for lifting reentry vehicles. The approaches to achieve an easier manufacturing process included investigation of resin systems, char improving additives, and physical reinforcement approaches. These materials and approaches were evaluated by consideration of manufacturing ease and by critical performance criteria of ability to withstand temperature cycling environment and satisfactory ablation performance.